New guy here (long ago a light MacTalk user and (cough) one time heavy MacWorld Australia Forum user. Thought I'd chime in since I've just acquired an iPad Pro 10.5" after my MacBook crashed (running again, but flaky).
I used the iPad for a full week as my sole device and have to say I doubt I will ever buy another laptop. That's not to say I'll never buy a desktop Mac (Mac Mini if they haven't killed it off), but as a portable device, the iPad is it for me. In my line of work I interview clients and take hand written notes, which I've always used pen and paper for (I could type on a keyboard, but it's less personal and I see clients at a very vulnerable time). The iPad Pro and Apple Pencil, of course, let's me write on the screen and being able to view my hand written notes in split screen view while I type the full document in Pages is a real productivity boost. I then speak from those typed notes, so of course, iPad again.
There are two things I haven't been able to do on the iPad so far that tie me to a Mac - change or create templates and paragraph styles in Pages, and upload podcasts to SquareSpace. Screen size and lack of a mouse also prevent me from giving the Mac the flick. Screen size can never be fixed (although I've considered airplaying to a monitor via Apple TV), but the iPad is so close. Really looking forward to iOS 11.